Flashmob
n. 快闪族：通过网络召集大量互不相识的人; 约定时间在某一地点集中; 闪烁暴徒; A group of people who appear from out of nowhere
🗣️ 情景例句
Why don't you join us?
你何不参加入我们呢？
Yes, indeed.
是的，确实如此。
Can we do anything to help?
用我们帮忙吗？